Adaptation - Level Theory: An Experimental and Systematic Approach to Behavior

adaptation level Amer American Psychological Association anchor areas arithmetic mean assimilation assumption average behavior bowed curves changes chromatic cognitive color color vision concept constant context contrast contrast effects curves depends determined disk effects ellipses Equation experiment experimental factors focal frequency function given gray greater Guilford Helson homeostasis illumination individual influence intensity interactions interval judged judgments learning level of aspiration light log mean luminance magnitude ment method modalities negative neutral norms objects organism perceived perception personality phenomena phenomenology pleasant pooling position predicted presented problem processes Psychol psychology psychophysical psychophysical methods quantitative range rating scale ratio receptors reinforcement relations residual responses sensory series stimuli shifts shown situation size-weight illusion social sources spatial standard stim supraliminal Table theory threshold tion types values variables visual weight weighted mean yield zero